Question 38 - The terminal velocity of a falling object, v is given by v = sqrt [ 4g (R - r) D / (3Cr) ] where sqrt is the square root of, g = 9.81, D = 0.000208, R = 1800, r = 994.6, m = 0.000893. The Reynold number, L is given by L = rD (v) / m. The C for various conditions are : C = 24 / L for L < 0.1; C = 24 (1 + 0.14 L^0.7) / L for 0.1 <= L <= 1000; C = 0.44 for 1000 < L <= 350000; C = 0.19 - 80000 / L for 350000 < L. Find the value of v for the situation above by trial and error, ^ is power, <= is less than or equal to.
- 1 Answers
- 1940 Views
- I also Faced
- E-Mail Answers
Answer Posted / kang chuen tat (malaysia - pen
Answer 38 - By trial and error, v = 0.016425. Excel function of program (Insert Function) in FORMULAS could be used to find a suitable value of C. Excel (Goal Seek : What-If-Analysis) in DATA could perform iteration on v. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What steps can be taken to avoid stress corrosion cracking (SCC) in steel vessels used for storing anhydrous ammonia?
Explain the steps required to design a vapor-liquid separator or flash drum?
Explain the steps taken to operate a tank-blanketing valve?
How does a tank-blanketing valve operate?
what is the hearth and arch pressure in furnace?
In a Furnace arch pressure is more than Hearth pressure,then how flue gas travels to stack
What are the some common causes of control valve noise?
Explain the different ways in which solids can be blended?
Explain how can you estimate the efficiency of a pump?
What is the angle of repose?
What are the advantages of using gear pumps?
Name some common problems associated with dilute phase pneumatic conveying?
Explain what particle sizes are electrostatic precipitators used to remove?
Why is a vacuum breaker used on shell and tube heat exchangers that are utilizing steam as the heating utility?
hello everyone do anyone have interview questions for any chemical industry please email me at
